Exercise analysis device, exercise analysis method, program, recording medium, and exercise analysis system

Abstract

A first imaginary plane specifying unit specifies a first axis which lies in a longitudinal direction of a shaft of an exercise tool at an address posture of a user, using an output of an inertial sensor. A second imaginary plane specifying unit specifies a second axis forming a predetermined angle along with the first axis, using a hitting direction as a rotation axis. An exercise analysis unit calculates a trajectory of a swing of the user based on an output of the inertial sensor. A trajectory determination unit determines whether the trajectory of the swing passes through a predetermined region specified based on the first and second axes.

What is claimed is: 
     
         1 . An exercise analysis device comprising:
 a first specifying unit that specifies a first axis which lies in a longitudinal direction of a shaft of an exercise tool at an address posture of a user, using an output of an inertial sensor;   a second specifying unit that specifies a second axis forming a predetermined angle along with the first axis, using a hitting direction as a rotation axis;   an analysis unit that calculates a trajectory of a swing of the user based on an output of the inertial sensor; and   a determination unit that determines whether the trajectory passes through a predetermined region specified based on the first and second axes.   
     
     
         2 . The exercise analysis device according to  claim 1 ,
 wherein the determination unit determines a portion of the trajectory which passes through the predetermined region and a portion of the trajectory which does not pass through the predetermined region.   
     
     
         3 . The exercise analysis device according to  claim 2 , further comprising:
 an image generation unit that generates image data in which a display form of the trajectory differs between the portion which passes through the predetermined region and the portion which does not pass through the predetermined region.   
     
     
         4 . The exercise analysis device according to  claim 3 ,
 wherein the image generation unit generates the image data in which a color of the trajectory differs between the portion which passes through the predetermined region and the portion which does not pass through the predetermined region.   
     
     
         5 . The exercise analysis device according to  claim 3 ,
 wherein the image generation unit generates the image data in which the trajectory continuously lights and blinks to distinguish the portion which passes through the predetermined region from the portion which does not pass through the predetermined region.   
     
     
         6 . The exercise analysis device according to  claim 3 ,
 wherein the image generation unit generates the image data in which a kind of line of the trajectory differs between the portion which passes through the predetermined region and the portion which does not pass through the predetermined region.   
     
     
         7 . The exercise analysis device according to  claim 3 ,
 wherein the image generation unit generates the image data in which a thickness of a line of the trajectory differs between the portion which passes through the predetermined region and the portion which does not pass through the predetermined region.   
     
     
         8 . The exercise analysis device according to  claim 1 ,
 wherein the first specifying unit specifies a first imaginary plane including the first axis and the hitting direction,   wherein the second specifying unit specifies a second imaginary plane including the second axis and the hitting direction, and   wherein the predetermined region is a region interposed between the first and second imaginary planes.   
     
     
         9 . The exercise analysis device according to  claim 8 ,
 wherein the image generation unit defines first and second regions interposing the predetermined region outside the predetermined region, and generates image data in which the predetermined region, the first region, and the second region are distinguished and displayed.   
     
     
         10 . An exercise analysis method comprising:
 specifying a first axis which lies in a longitudinal direction of a shaft of an exercise tool at an address posture of a user, using an output of an inertial sensor;   specifying a second axis forming a predetermined angle along with the first axis, using a hitting direction as a rotation axis;   calculating a trajectory of a swing of the user based on an output of the inertial sensor; and   determining whether the trajectory passes through a predetermined region specified based on the first and second axes.   
     
     
         11 . The exercise analysis method according to  claim 10 ,
 wherein in the determining of the trajectory, a portion of the trajectory which passes through the predetermined region and a portion of the trajectory which does not pass through the predetermined region are determined.   
     
     
         12 . A program causing a computer to perform:
 specifying a first axis which lies in a longitudinal direction of a shaft of an exercise tool at an address posture of a user, using an output of an inertial sensor;   specifying a second axis forming a predetermined angle along with the first axis, using a hitting direction as a rotation axis;   calculating a trajectory of a swing of the user based on an output of the inertial sensor; and   determining whether the trajectory passes through a predetermined region specified based on the first and second axes.   
     
     
         13 . A recording medium that records a program causing a computer to perform:
 specifying a first axis which lies in a longitudinal direction of a shaft of an exercise tool at an address posture of a user, using an output of an inertial sensor;   specifying a second axis forming a predetermined angle along with the first axis, using a hitting direction as a rotation axis;   calculating a trajectory of a swing of the user based on an output of the inertial sensor; and   determining whether the trajectory passes through a predetermined region specified based on the first and second axes.   
     
     
         14 . An exercise analysis system comprising:
 an inertial sensor;   a first specifying unit that specifies a first axis which lies in a longitudinal direction of a shaft of an exercise tool at an address posture of a user, using an output of the inertial sensor;   a second specifying unit that specifies a second axis forming a predetermined angle along with the first axis, using a hitting direction as a rotation axis;   an analysis unit that calculates a trajectory of a swing of the user based on an output of the inertial sensor; and   a determination unit that determines whether the trajectory passes through a predetermined region specified based on the first and second axes.   
     
     
         15 . An exercise analysis device that determines whether a trajectory of a swing of a user passes through a V zone. 
     
     
         16 . The exercise analysis device according to  claim 15 ,
 wherein a display form of the trajectory differs between a portion of the trajectory which passes through the V zone and a portion of the trajectory which does not pass through the V zone.   
     
     
         17 . The exercise analysis device according to  claim 16 , further comprising:
 an image generation unit that generates image data in which the display form of the trajectory differs between the portion which passes through the predetermined region and the portion which does not pass through the predetermined region.   
     
     
         18 . The exercise analysis device according to  claim 16 ,
 wherein the image generation unit generates image data in which a color of the trajectory differs between the portion which passes through the predetermined region and the portion which does not pass through the predetermined region.   
     
     
         19 . The exercise analysis device according to  claim 16 ,
 wherein the image generation unit generates image data in which the trajectory continuously lights and blinks to distinguish the portion which passes through the predetermined region from the portion which does not pass through the predetermined region.   
     
     
         20 . The exercise analysis device according to  claim 16 ,
 wherein the image generation unit generates image data in which a kind of line of the trajectory differs between the portion which passes through the predetermined region and the portion which does not pass through the predetermined region.   
     
     
         21 . The exercise analysis device according to  claim 16 ,
 wherein the image generation unit generates image data in which a thickness of a line of the trajectory differs between the portion which passes through the predetermined region and the portion which does not pass through the predetermined region.